1996—Subsec. (a). Pub. L. 104–132, §§ 511(c), 725(1)(A), (B), in heading, inserted “Against a National of the United States or Within the United States” after “Offense”, and in introductory provisions, substituted “, without lawful authority, uses, threatens, or attempts” for “uses, or attempts” and inserted “, including any biological agent, toxin, or vector (as those terms are defined in section 178)” after “mass destruction”.